No room to talk! After Scott Disick was caught canoodling with his ex-girlfriend Chloe Bartoli in the South of France in July, his longtime love and the mother of his three children, Kourtney Kardashian, has officially moved on. As Us Weekly exclusively revealed last week, the eldest Kardashian sister, 36, has been hooking up with Justin Bieber for months.

“Justin and Kourtney have been hooking up since late August, early September,” a source tells Us in the new cover story, on stands now.

Not only has the “Sorry” singer, 21, “bragged” about his latest escapades, but another source adds, “Justin started hanging out with Kourtney alone because she started going out more.”

Naturally, this hasn’t made the self-proclaimed Lord Disick, 32, feel too good, but an insider tells Us that he hasn’t said a word against the romance.

“He’s had so many stories about him recently, he has no reason to be pissed,” a source says. “He feels like he has to take the humiliation.”

But that doesn’t mean he approves.

“Scott feels she’s doing this to get back at him and get revenge,” the insider says. “He feels he has to take it and can’t say anything after all he did to her, but he thinks it’s dumb and immature.”

Despite this new romance, Disick has been crashing on Kardashian’s couch while he looks for a new place. And while he’s been hanging at the pad, he’s obviously been spending more time with the couple’s three children.

“He’s still sober and he’s great with the kids, and Kourtney is happy that he’s so involved,” a source says. “He’s more involved now than he was before.”

For more details on Kourtney and Justin’s fling, watch the video and pick up the new issue of Us Weekly, on stands now!

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